(19)

(11)

EP 0 929 497 A1

(12)

(43) Date of publication: 21.07.1999 Bulletin 1999/29 (21) Application number: 97932656.0 (22) Date of filing: 04.08.1997

(51) International Patent Classification (IPC):  B66F 9/ 06( . ) B66F 11/ 04( . ) (86) International application number: PCT/AU1997/000489 (87) International publication number: WO 1998/005583 (12.02.1998 Gazette 1998/06)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 02.08.1996 AU 1996PO01395 29.11.1996 AU 1996PO03920 (71) Applicant: Holt Industries Pty. Ltd Toowoomba, QLD 4350 (AU)	(72) Inventor: SENIOR, Neil, James Main Beach, QLD 4217 (AU) (74) Representative: Evens, Paul Jonathan, et al  Maguire Boss, 5 Crown Street St. Ives, Cambridge PE17 4EB St. Ives, Cambridge PE17 4EB (GB)